Aspirator.



PATENTED JUNE 25, 1907.

J. BOBKEL.

l ASPIRATOR. ArrLIoATIoI `41111.21) nov. 2z, 190m` attenua! Umar-STATES incurran, orv PHILADELPHIA, .PENNSYLVANIAL l AsPllnA'rom" To all whom t may concern:

Bo it known that I, JULIUs Bonner., a citizen of the United States, residing at Phila-y delphia, in the .county of Philadelphia'and State of Pennsylvania, have invented certain new and usefu Improvements in Aspirators g and do hereby declare the following to be a full, clear, and exact descr-i tion of the invention, such as will enable ot ers skilled in the art to which` it appertains to make and use the same. f

- This invention relates to 'aspirators so. called, which employ a current of water to draw air into the same, the air and water passg ing down together. The most common utility of such articles is to draw air. from a reservoir below a liquid filter or to supply air and water to a reservoir," from the top of which the. air may be drawn off to furnish pneumatic pressure. monly made and used, are composed of a water supplying ipe, an air-inlet pipe and an make the vacuum ess comp is to more perfectly draw in and leffect by giv-4 outlet latter plate or its own undulating form as-to break up the current of wateran'd prevent the return of the air u the pipe, whichwould ete and efficient. The chief object of the present invention prevent pipe 1n me with saidwater pipefthe such return of, the air. This ing the current of water a rotary motion before the current of air is drawn into it, which of; Fi 3 represents a detail view. of the spiral eector which causes the rotary movement aforesaid. Y y

A designates the tubular body of the aspi rator having its upper end formed into an externally screw-threaded waterv inlet a connected .by coupling M to any convenient source of water supply, as a pipe or a hydrant l for example. B designates the outlet pipe extending vertically down from the lower end of said bodv. C designates the air inlet tube fitted into uthe side of said body and having.

a nipple c at its outer end adapted to receive l .Specification cf Letters Patent. 'l appunti@ mea November 22,1906. serial No. 344,564.

These articles, 'as comeing so obstructed by a partition .correspondin Pin-*ENT OFFICE Patent-ea June 25, 1907.

a rubber or other tube from a filter or other source of air-supply, or itmay be used where a vacuumor lig t pressure of air is, desired.

A llongitudinal central bore A extends from the interior of water inlet c to the out- ,let pipe B and is at its upper end of small diarneter which remains unchanged for a short dlstance down, then widens a little forming an offset h above the air inlet & thereafter flares regularl downward to a equal diameter with sai outlet pipe. A preferably downwardly inclined air assa e d extends from a vacuum chamber in t e proximate art of air inlet ipe Oto this bore A just be- OW the point W ere the flare therein begins: The outer end of said vacuum chamber communicates by a small passage e with a valvechamber f, which may receive a check valve, though such valve is not necessary. A longer inlet bore g extends to the slotted end of said nipple and admits air to the aspirator.

A fixed spiral deflector L in water inlet a receives the downward current of water and gives it a spiral, rotary motion'which continues during the passage of the water through the bore Al and outlet pipe B. The air drawn in' through passage d circles downward with it and is prevented by the water, thus moving and expanding somewhat through such rotary motion, from ascendin to the vacuum chamber and thus making t e vacuum imperfect and lessening the power of such suc- A tion. In practice this' device has been found exceeding y effective for that purpose, a recent test with the leading forms commonly in use, known as xthe Chapman and Richards aspirators, showing a gain of from about 35 per cent to about 500 per cent in time and a lessening of the amount of water neede to eHect a given amount of work.

Th'e outlet tube is just' a straight plain cylindrical pipe with no need for any partition or special construction. The same is true of the water-inlettube excepting the spiral deflector and the'air inlet tube excepting the referably. downward inclination 'of passage E, which gives no trouble. The deflector for causing rotary motion is therefore the only 'real addition to the filter pump, which is very IOO scribed, never turnin laterally, but confined absolutel `to acomparatively narrow lpassage. here 1s no need for any concentric or supplemental elements and consequently the device 1s cheap in manufacture, simple, solid, durable, unlikely to get out of order and is easily cleaned and repaired.

Having thus described my inventlon, what I claim as new anddesire to secure byLetters Patent is:

1. In anaspirator, a Water inlet, a branch air-inlet and an outlet, in combination with a spiral deiiector in said Water' inlet and a tubular body having said inlets and said outlet connected thereto, the said air inlet being connected to the bore of said body by a downwardly inclined passage, and t e said bore being small and of equal diameter from the said Water inlet to the said passage, but flaring downwardly thereafter to the diameter of the outlet pipe which joins it substantially as set forth. Y

2. In an aspirator, a water inlet, a branch air-inlet and an outlet, in combination with a spiral deiiector in said Water inlet and a tubular body having said inlets and said outlet connectedthereto, the longitudinal bore of said body being small and of equal diameter from the Water inlet nearly to the air-inlet but Haring downwardly thereafter to the diameter of the outlet pipe which joins it as set forth.l

3. In an aspirator, a Water outlet, a branch air-inlet and an outlet, in combination with means in said Water inlet for giving the current of Water a rotary motion and a tubular body having said inlets and said outlet connected thereto, the longitudinal bore of said bodybeing small and of equal diameter from back noi` expanding the water inletl nearl to the air inlet, but Haring downwardly t ereafter to the diameter of the outlet pipe which joins it substantially as set forth.

4. In an aspirator, a Water inlet, a branch air-inlet andan outlet, in combination with a spiral deflector in said Water inlet and a tubular body to Which said inlets and outlet are attached, the longitudinal bore of said body extending beyon the said inlets and both it and the connected outlet being closed laterally, confining the aerated'wate'r to a single contracted channel substantially as set forth.

5. In an aspirator, a Water-inlet, a branch I air-inlet and an outlet in combination with a device for 4causing rotary motion of the current of water arranged Within the Water inlet and a tubular body to which said Ainlets and outlet are attached, the longitudinal bore of said body extending beyond the said inlets and both it and the connected outlet being closed laterally, coniining the aerated Water j to a single contracted channel substantially as set forth.

6. In anl aspirator, a Water inlet, a tubular body and an outlet arranged end toend With closed sides, confining the current of Water to a direct contracted channel, in combination with an air inlet`discharging into the bore o'f said body and a spiral deiiector in said Water inlet, giving the current of Water a rotary movement to prevent the return of the air substantially as set forth.

In testimony, WhereofI have signed my name to this specification in the presence of two subscribing Witnesses.

JULIUS BOEKEL Witnesses:

ALEX WALTER, HANS ,WENIGEa 

